The group arrives at the jungle and experience challenges on the way to The Lost City. The challenges include leeches, unpredictable weather, extreme humidity, mosquitoes, cannibals, and hippos.
They find The Lost City and set up camp near it, and near a volcano that could potentially erupt at any time. At the camp, they experience attacks from the gorillas that killed the employees some of the group. The team find out the gorillas were trained to kill when The Lost City had diamond mines to keep people from stealing diamonds.
The group use amy as a translator for the gorillas to leave them alone and they finally find the diamonds they had been looking for. The volcano erupts, causing the group to run and escape in a hot air balloon.Amy is left in the wild where she wants to be, and is seen teaching her infant ASL.